- Clean your sponge daily
A clean dish sponge decreases the chances of spreading bacteria. Wash it with soap water after every use. Choose a brand that is machine washable or dishwasher friendly to make the task easier.
- Soak it in a bleach solution every week
Mix 1/2 cup of bleach with 5 cups of water. Soak your sponges in the solution and wait for 10 minutes. The 1:10 bleach solution should kill off the bacterial effectively. Rinse thoroughly and squeeze out all the liquid. Leave them hanging to dry completely.
- Microwave as an alternative
From time to time, make the sponge completely wet and microwave it for one minute. This way, most of the bacteria inside will be killed. Make sure you keep an eye on it when it is in the microwave (some sponges may catch fire). Or better, choose a brand that is made of anti-bacterial material, to minimize the bacteria.